"Every once in a while I like to know that a higher mammal died for my dinner."

Friendship is also found among animals of higher intelligence, such as higher mammals and some birds.

Certainly, it plays a more important role in higher mammals than in lower ones.

As you know, it was in 1981 that the Accident occurred which sterilized man and most of the higher mammals.

All but the most ephemeral organisms tended to live through at least one complete year, and the higher mammals survived longer.

It is much more interesting when the negotiations are conducted between higher mammals.

The complex convolutions of the cerebral surface are also found only in higher mammals.

Like the higher mammals and the other primates, humans have a relatively massive neocortex.

In the higher mammals we get the beginnings of instinctive affection.

Those are very minor renal functions in the higher mammals.